05-22-2016 01:20 PM
I've had a battery issue (the known one : battery says 100% and suddenly falls at 0% and shut down) and in September I sent my computer to Lenovo. It tooks about 6-7 weeks for the battery to be replaced. My warranty was supposed too be extended, but was not. Now, my battery has the exactly same problem. I do not want my battery to be replaced again : it takes a too much long time and I can't wait that much long again. Can someone help me please to resolve this problem?
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05-24-2016 04:05 AM
Welcome to the Lenovo Philbilo.
Reset the BIOS to default before you do anything else.
Based from your findings, it's possible that:
- The battery circuit inside is not working to unload the charge, or
- One of the battery cells have already reached its life span
- the chip that handles how the battery gets charge/discharge and checks the charge level of each battery cell (both are controlled by a firmware) is malfunctioning.
Batteries degrade overtime due to heat and daily use. If you're still under warranty, i would suggest you to visit the nearest authorised Lenovo authorised support for hardware assistance.
Let us know how you get on.
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10-11-2016 10:29 AM
In response to customer reports of unexpected battery gauge behavior on Y40-70 and Y40-80 laptops, Lenovo determined the battery gauge software is performing as expected. The unusual gauge results being reported are a reflection of the battery reaching end of life.
Lenovo has released a Service TIP to assist customers with obtaining battery replacements under warranty, or if out of warranty, to find a replacement battery from Lenovo-approved vendors. The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-I0023
The part numbers for Y40-70/80 batteries are:
Y40 SP/A L13M4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500248
Y40 LG L13L4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500249 substitute part 121500251
Y40 CP/C L13C4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500259 substitute part 121500251
To determine which battery came with your Y40 notebook, instructions for removing the bottom cover can be found in the Hardware Maintenance Manual pdf here. An alternative to opening your system (which does not void warranty) is to search for batteries using the model/product number located on the bottom cover.